Curved-stereotype-plate-casting mold



H. A. W. WOOD CURVED STEREOTYPE PLATE CASTING MOLD May 4 1926.

Original Filed July 12, 1922 6 s t s t 1 May 4 1926.

H. A. w. WOOD CURVED STEREOTYPE PLATE CASTI NG MOLD Qriginal Filed July 12. 1922 6 s ws-h at 2 illlalllllllllkllllllll I llllllllll W@ m@ MN -Huwi W M j May 4 1926.

H. A. W. WOOD URVED STEREOTYPE PLATE CASTING MOLD 6 Sheets-Sheet 5 gyjli'ez aaz Original Filed July 12, 1922 May 4 1 H, A. w. wooo CURVED STEREOTYPE PLATE CASTING MOLD Original Filed July 12. 1922 6 s t sh t 5 May 4 1926.

H. A. W. WOOD cunvzn STEREOTYPE PLATE CASTING MOLD mfigkk mm; a

6 khvuw r m. E w. w m um. J my 4! a; K y m m m 38 x98 08m um m M m r/ 0 L66 1/ .Patented May 4, 1926.

UNITED STATES HENRY A. WISE WOOD, OF NEW YORK, N. Y., ASSIGNOR T0 WOOD NEWSPAPER MA GHINERY CORPORATION, OF NER YORK, 'N. Y.,- A CORPORATION OF VIRGINIA.

CURVED STEREOTYPEPLATECASTING MOLD.

Application filed. July 12, 1922', Serial No. 574,377- Renewed. September 14, 1925.

To all whom it may concern:

Be it known that I, HENRY A. l/Vrsn 7001), a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful Curved-Stereotype-Plate-Casting Mold, of which the following is a specification.

This invention relates to a machine for casting stereotype printing plates of the curved or semi-cylindrical variety. In this machine I use certain features shown, described and claimed in my'co-pending application for patent Serial No. 568,137 filed on the 14th day of June, 1922, Case No. 333. I have shown them here in the single plate form, but this invention can be made to cooperate with that shown in said application complete in all its details.

" The principal objects of my invention are to provide a convenient and practical back adapted especially for being manipulated in such a manner that no time will be lost in changing the matrices between casting operations. 7

More specifically the invention involves the provision of two backs or concave casting surfaces to cooperate with one core. These two backs are movable toward and from the core to close and open the mold. They are further movable to a great-er distance from the core, when the matrix is to be changed, and also are capable of moving in another direction, as for example by rotation, to bring a new matrix into position to register with the core. At the same time the matrix that has just been used for casting is turned away from the core into a position in which it is convenient for the operator to take it out and replace it .while the other back is being used for casting in the ordinary way. The invention also involves novel features of construction and combinations of parts for effecting that result.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a plan of a stereotype printing machine embodying the features of this invention;

Fig. 2 is an end view of the same;

Fig. 3 is a front elevation;

Fig. 4 is a plan similar to Fig. 1 on an enlarged scale with parts of the saw rotating mechanism removed to avoid confusion;

Fig. 5 is a plan of the casting back as shown in Fig. 4 drawn away from the core and turned around 90; 7 I Fig. 6 is a vertical sectionalview on the line 66 of Fig. 4 of the core and back in casting position;

- Fig. 7 is a sectional view at right angles to the same on the line 77 of Fig. 4;

Figs. 8 and 9 are horizontal sectional viewson the lines 88 and 9-9 respectively of Fig. 6;

Fig. 10 is a sectional view similar to the upper part of Fig. 6 showing merely the castlng operation;

Fig. 11 is a front view on an enlarged ical]: of means for moving and turning the Fig. 12 is a horizontal sectional view through the upper part of the back showing the devices for controlling the turning of the same; "T

F'g. 13 is an end view of the pawl mechanism constituting a partof the same;

Fig. 14 is a plan partly in section looking in the direction of the arrow 14 in Fig. 13;

Flg. 15 is an end view of the cam for controlling the operation of the saws;

Fig. 16 is a transverse sectional view of the core with the casting plate thereon ready for delivery, showing the saws in position;

Fig. 17 is a side view of one edge of the casting back showing the matrix clamping devices and corresponding parts in position and indicating the relative positions of the saws;

Fig. 18 is an enlarged horizontal sectional view on the line 1818 of Fig. 17 showingv the cast plate and core in position and Figs. 19, 20, 21 and 22 are diagrammatic views showing different positions of the parts at different stages in the process of producing a plate.

I have shown the invention as applied to a machine or mold for casting a curved stereotype printing plate in which machine the core is mounted to rotate on a fixed vertical axis to cooperate with a semi-cylindrical vertical back movable laterally toward and from the core to complete the mold and open it. Although this invention iscapable of being used in other ways, I have shown it"as being provided with a core, saws, matrix holding, and plate ejecting de= vices such as shown and described in my copending application above mentioned. The core is rotated half a revolution to deliver the seini-cylindrical cast plate in a vertical position. The-main frame has a hollow support 11 for the bottom of a vertical column 12. On this column is rotatably mounted the rotary core or cylinder 13. This core is cooled by introducing water through a passage 14 into the bottom of a central stationary tube 15 perforated at 16 throughout one half of its circumference and from endwith the 'reciprocatory and rotary double back 48.

The power for the machine is provided through a driving shaft 20 which by means of a worm 21 drives a vertical shaft 22 having a gear connection 23 to a horizontal shaft 24 at the top of the machine. On this shaft is a pulley 25 which preferably drives the usual mixer in the melting pot. The shaft 24 is provided with a clutch 26 for connecting it with a separate shaft 29 in alignment therewith. A bevel gear 27 on the shaft 29 meshes with a bevel gear 28 fixed to the core 131E01 driving it. V

A-lever 30 is pivoted on a stud 31 for operating the clutch. The lever hasaroller 32 en tering a groove in the collar 33 on the sliding portion of the clutch for connecting and disconnecting the latter. A-spring 34 normally holds the lever in a position for disconnecting th'eclutch. A cam wheel 35 fixed on the core 13 acts on a roller 36 on the lever 3O to hold the clutch engaged throughout half of a revolution of the core. This wheel 35 has two notches 37 into which the roller 36 is pressed by the action of the spring 34 at the end of a half revolution. This draws out the clutch and stops the core without interfering with the operation of the rest of the machine. The core, of course, is started by moving the 'lever30 to the open position. This provides for rotating the core or cyl inder 13 through a half revolution and then automatically stopping it.

On the shaft-20 there is a gear 40 which through another gear 39, operates a vertical shaft 41 constantly. This shaft is shown as provided with a pulley -42 which by means of abelt 43 passing over idlers 44, positively rot-ates a vertical shaft 45 located in'bearings on brackets 46 on the frame 10. These brackets 46 are pivoted on centers 47 so that they can swing. On this sha ft are mounted saws 49, located at the proper distance apart to bevel and trim the curved edges of the plate while on the core and separate the riser.

Extending out from the frame 10 in a radial direction with respect to the core is a platform 61 having two flat surfaces 62 at its sides constituting tracks. On these tracks run rollers 63 whichare mounted on and support a slide 64 carrying the double back 48. The frame 10 is provided with adjustable guides 65 which bear against the sides of this slide 64 and prevent its moving sideways and guide the back to proper position to register with the core as described below.

The slide 64 and double back 48 are moved toward and from the core by a handle 50 mounted on a horizontal shaft 51. This shaft operates a parallel shaft 54 by gears 55. On this shaft 54 are two arms 52 connected by two links 53 with the opposite sides of the slide. The swinging of the handle 50 and the turning of the arms 52 through a short are results in drawing the slide 64 and back 48 away from the coreto the dotted line position of the back 48 in Fig. 19. This is all that is: necessary in the ordinary operation of the device to separate the mold parts prior to delivery of the cast ing. When it is necessary, however, to place a new matrix in the mold the handle is swung way over to bring the back to the position shown in Fig. 20. The operator can then remove the old matrix and replace it by a new one in a convenient manner'as will appear.

Also mounted on the shaft 51 is a cam '56 having a groove 57 composed of two parts. In this groove operates a roller58 on a lever 59. The first part of the groove 57 to act on the roller when the back is moved back from thecore is so. shaped that it will swing the lever 59 at that time and move a link 60 connected with the lever and with one of the brackets 46. Therefore. the saws 49 on the shaft 45 will be swung inwardly toward the plate. As they rotate constantly, they will act on the plate in a manner shown in Fig. 20, the second half of the groove 57 will not affect the action of the saws because it is concentric and leaves them his position which they assume when the back is drawn out to the ordinary-or intermediate position away from the core.

The back provided at each its side or ges with a vertical rock shaft held in one position by a spring 73. This shaft is mounted on an arm .76 to which is pivoted an operating handle 77 for swinging the rock shaft in opposition to its spring. This handle is at'the top of the back. Located on this shaft 75 is an arm 74 designed for engaging the matrix bar locking cam 78. 'lurningthis handle will unlock the matrix bar 80 which is mounted on the shaft 75.

The matrix bar is guided by studs 81 working in slots 82 thereon. It is operated by a lever 83, connected by a link 86 with a stud 87 on the matrix holding clip 88. One

of these clips is provided at each side of the back for the matrix. These clips in the usual way come over the edges of the matrix and on being pulled over by the lever clamp the matrix in position against the bar 80.

A pouring sheet S is used at the top, as usual. The bottom of the matrix is held in position in any of the ordinary ways.

The separation of the plate from the core or cylinder is accomplished by a pair of spring pressed. pivoted ejecting fingers 66 carried by the back.

Theabove described features are shown in substantially the form illustrated in my above mentioned copending application and claimed therein. Therefore, they are not claimed in this case except as they enter into combination with the novel features described below.

This invention, as stated above, is designed especially to hold a plurality of matrices to coact alternately with the core. The way in which this is done is indicated in Figs. 4 and 5.

As has been stated, the back 48 is mounted to move toward and from the core both for the purpose of separating the back from the cast plate on the core and for the purpose of drawing the back out far enough topermit of exchange of matrices. The first oporation is performed by swinging the handle 50 through an arc of about as shown, and through the first portion of the cam groove 57 as in my above mentioned application. The movement of the handle through the remainder of the cam groove brings the back 48 to the second dotted line position indicated in Fig. 3 where it is so far away from the core that the back can be turned around on a central vertical axis.

As will be noted from the drawings the back is of double formation having two semicylindrical mold concavities or casting surfaces on opposite sides, each one adapted to hold a matrix in the manner which has been indicated above. It is mounted to turn on a vertical stationary shaft and support 90 which is mounted on the slide 64 which moves back and forth on the tracks.

On opposite sides of this shaft are two water cooling passages 91 cast in the back itself. Both of these passages are of semicylindrical formation, surrounding the two semi-cylindrical mold surfaces. Each one is provided with a radial outlet port 92 at the top. i

The shaft 90 is also provided with alongitudinal passage 98 for allowing the water to drain out. This passage extends out horizontally at the top to form a radial port so that when the back is swung around the stationary shaft 90 the port 93 will register at the top with oneof the ports 92 in certain 7 positions. The top of the passage 93 extends toward the core and therefore the water will circulate in the water passage 91 which ex tends toward the core; that is, the one which is ready for casting, or is in the act of casting. This casting surface is cooled therefore while the other is not. 7

On the bottom of the back is fixed a bevel gear 95 which is operated by a bevel gear 96 on a transverse shaft 97. This shaft is operated from the vertical shaft 41 by two sets of spiral gears 98 and 99 on a shaft 100. One gear of the set 99 is slidingly keyed to the shaft and these gears 99 travel long this shaft 100 with the back 48.

The gears 99 are always in mesh and always rotating constantly, but the shaft 97 is connected with these gears by a clutch 101 operated by a lever 109 connected by a link 102 with a lever 103 pivoted at 104. This lever 104 is provided with a slide 105 pivoted to it and supported on the back 48. The other end of the lever is provided with a roll or projection 106 adapted to be engaged normally in either one of two diametrically opposite notches 107 on'a disc 127 on the bottom of the rotary back 48 to lock it against rotation. When the clutch is connected and the back is rotating the parts are in the position shown in Fig. 5. As soon as the back is rotated half a revolution the roll 106 comes into registration with one of the notches 107 and is forced into it by a spring 108. This disconnects the clutch and stops the rotation.

On the shaft 51 is wound a spring 115, the two ends of which engage a pair of pawls 116 pivoted on the cam 110, which is loose on the shaft. on a collar 117 fast on the shaft are located two pins 118 for cooperating with the pawls. These pawls slip by these pins when turned in one direction, but positively turn the cam 110 with the shaft in the other direction as will be obvious. This provides for positively operating the cam. i

The cam 110 has two opposite cam pro jections one of which engages a roll 111 on a lever 11?. and push it out when the handle 50 is moved back far enough to bring the double back into its extreme retracted position. This forces the lower end of a lever 112 inwardly against the action of a spring 115. This spring is located on a sliding rod 113 connected to the lower end of this lever and guided in a perforated boss 114 on the frame. This rod, therefore, also is forced inwardly into a position to engage the end of the rod 105.

Operation.

101 so that the back rotates half way around through the position shown in Fig. 21, in which position the back is in the act of rotating. This brings the back over into the position opposite to that shown in Fig. 20, and the first matrix A from which a casting has just been made as in Fig. 19 is brought out where the operator can remove it, while the previously positioned matrix B is brought into a position next the core and ready to be moved up to the core in order to perform the next casting operation. In this way no time is lost in exchanging matrices.

The drawings on the last sheet show the operation of the device diagrammatically. In Fig. 19 the casting is being produced between the back and the core on the matrix A. The dotted line position in this figure shows where the back is left when moved out merely to separate it from the core and allow the cast to be delivered by the rotation of the core. The ordinary practice is to make repetition of castings from the same matrix and the back is simply moved between the two positions indicated in Fig. 19 for that purpose. However, when it is desired to change, a new matrix B is placed on the other side of the back at any convenient time while the casting and separating operations are going on. This matrix being in position, the parts are all ready for the change of matrix when desired. This is done by continuing the motion of the back away from the core to the position shown in Fig. 20 when the next plate has been cast. The operation of the handle to bring the back into this position automatically closes the clutch 101 as stated above, and the back turns through the position shown in Fig. 21 all the way around to the position the same as that shown in Fig. 20, except that the back is turned end to end and the matrices are changed, so to speak. At this time the cylinder or core has rotated the plate past the saws and the plate is still mounted on the core, with its riser cut off and its bottom and top edges trimmed. Now the back is moved clear back up to the core as shown in F 22 with the matrix B in position for casting. The plate is preferably detached from the core by the projecting ejectmg fingers 66 as in my above identified ap plication.

This obviates the necessity of stopping the casting operation while the matrix is being changed, because while one face of the back is being used for casting purposes the other half can be operated upon by the attendant for removing the old matrix if necessary and at any rate placing a new matrix in it ready for the later casting operation. It will be understood that no extra motion of the back away from the core is required, because this is done when the mold is to be opened and it is simply opened wider than would be the case otherwise, and the rotation of the back is made automatic. Also it will be observed that the coo-lingof the two parts of the back is automatic to the extent that the water circulates through each half of the back while it is in position for casting or located adjacent to the casting core. After it is returned away from that position there is no need of cooling it ordinarily and the water stops circulating through it. The same operation of the back can be utilized for the mere purpose of inspecting the matrix or other inside casting surface thereof.

Although I have illustrated and described this invention in connection with the apparatus shown in my above identified application, I am aware of the fact that this invention can be carried out without limiting it to that particular apparatus. Therefore, I do not wish to be limited in that respect or to the details of construction herein shown and described, except as expressed in the accompanying claims.

Having described my invention, what I claim is 1. In a stereotype plate casting mold, the combination with a score and a back having two concave casting faces oppositely located thereon, of means for separating the back and core, and means for turning the back exactly half way around when they are separated.

2. In a casting machine, the combination with a core movable for delivering a casting out of the mold anda back cooperatingtherewithand having a plurality'of casting faces, each adapted to cooperate with the core, of a shaft on which said back is rotatably mounted, means for moving said back and its shaft away from the core, and means whereby when the back is moved to its limiting position it will be connected with a source of power and rotated.

.3. In a stereotype plate casting mold, the combination with a core, means for turning said core a half revolution for delivering a cast plate, and a back having a plurality of casting surfaces for cooperating with the core, of manual means for drawing the back away from the core far enough to separate the core and back and allow the core to turn anoldeliver the casting from the back, said means also being capable of moving the back a further-distance away from the core, means whereby when said means is operated to move the back to a point beyond the ordinary delivering position the back will be turned automatically through a predetermined angle to bring another-face of said back into registration with the core, and means for automatically stopping the rotation of the back when it has completed half of a revolution 4. In a stereotype plate casting machine,

the combination of a core mounted to rotate to deliver a cast plate, with a back having a casting surface, a slide on which the back islocated, a shaft on said slide on which the back is adapted to turn, means connected with said slide for moving it back and forth from the core, a cam on said shaft, a rod adapted to be operated by said cam, and means connected with the back and adapted to come into position for operation by the shaft for positively'connecting the back with a source of power and'rotating it when the back is movedto its limiting position 5. In a stereotype plate casting mold, the combination with a cylindrical core, of means for turning said core a half revolution for delivering a cast plate, and a back having a plurality of curved casting surfaces for cooperating with the core.

6. In a stereotype plate casting mold, th combination with a core, means for moving said core for delivering a cast plate, and a back having a plurality of casting surfaces for cooperating with the core, of means for drawing the back away from the core, and means whereby when said means is operated to move the back to a point beyond the ordinary delivering position the back will be turned automatically through a predetermined angle to bring another face of said back into registration with the core.

7 In a stereotype plate casting mold, the combination with a cylindrical core, means for turning said core a half revolution for delivering a cast plate, and a back having a plurality of curved casting surfaces for cooperating with the core, of manual means for drawing the back'away from the core in a radial direction far enough to separate the core and back and allow the core to turn and deliver the casting from the back, said means also beingcapable of moving the back a further distance away from the core, means whereby when 'said means is operated to move the back to a point. beyondthe ordinary delivering position the back willbe turned automatically through a predetermined angle to bring another face of said back into registration with the core, and means for automatically stopping the rotation of the back when it has completed half of a revolution.

8. In a casting machine, the combination with a core movable for delivering a casting out of the mold and a back cooperating therei with and having a plurality of concave casting faces, each adapted to cooperate with'the core, "of a non-rotatable shaft on which said back is rotatably mounted, manually opera ated means formoving said back and-its shaft away from the core, and means whereby when the back is moved to its limiting position it will be connected with a-source of power and rotated.

9. In a stereotype plate casting machine,

the combination with a'cylindrical core rotatable on an axis for dellverlng'a cast ng out of the mold, and a concave back cooperating therewith, of anon-rotatable shaft on which said back is rotatably mounted, manually operated means for moving said back and its shaft away from the core, means whereby when the back-is moved to its limiting po sition it will be connected witha source of power and rotated, and means for automatically stopping the rotation of the back when it has completed a half revolution. f

10. In a stereotype plate casting machine, the combination of a cylindrical core mounted to rotate to deliver a cast plate, with a back having a-concave casting surface, a. slide onwhich the back is located, a nonrotatable shaft on said slide on which the back is adapted to turn, a shaft having arms connected with said slide for moving itback and forth from the core, a cam onsaid shaft, a rod adapted to be operated by said cam, and means connected with the back and adapted to come into position for opera'- tion of the rodfor positively connecting the back with a source of power and rotating it when the back is moved to its limiting position. i

11. In acasting machine, thecombination of a core with a back having two casting surfaces for cooperation with the back, a slide 011 which the back is located, a shaft on said slide on which the back is-ad-apted to turn, a shaft having arms connected with said back connected with said slidefor moving it back and forth'from the core, means for turning said shaft, a cam on said shaft, a rod adapted to be operated by said cam, and means connected with the back and adapted to come into osition for operation of the rod for positive y connecting the back with a source of power and rotating it when, the backis moved to its limit-ing position.

12. In a casting machine, the combination of a core with a back having two casting surfaces for cooperation with the back, a slide on which the back is located, a shaft on said slide on which the back is adapted to turn, a shaft having arms connected with said slide for moving it back and forth from the core, means for turning said shaft, a cam on said shaft, a rod adapted to be operated by said cam, and means connected with the back and adapted to come into position for operation of the rod for positively connecting the back with a source of power and rotating it when the back is movedto' its limiting position, said cam being loose on the shaft and having two opposite cam projections, and a pawl construction for positively turning'the cam in one direction from the shaft a half of arevolution.

13. In a casting machine, the combination of'a core with a back having a casting surface for cooperation with the back, a slide on which the back is located, a shaft on said slide on which the back is adapted to turn, a shaft having arms connected with said slide for moving it back and forth from the core, means for turning said shaft, a cam on said shaft, a rod adapted to be operated by said cam, means connected with the back and adapted to come into position for operation of the rod for positively connectingthe back with a source of power and rotating it when the back is moved to its limiting position, the last named means comprising a clutch, a notch in the back, and a lever for operating the clutch and having a roll adapted to enter said notch to lock the back and to leave the notch to release the back.

14:. Ina mold for casting stereotype printing plates, the combination of a core and a back having a plurality of casting surfaces thereon, with a non-rotatable shaft on which the back is adapted to turn, means for introducing water for cooling purposes into the interior of said back behind each casting surface, and means extending through said shaft for allowing the water to circulate behind one of said casting surfaces that is adjacent to the core and preventing circulation behind the other.

15. In a machine for casting stereotype printing plates, the combination of a mold having means for supporting two matrices, With means for bringing either matrix into operative position in the mold at the will of the operator.

to casting position.

17. In a stereotype plate casting mold, the combination with a core and a back having two casting cavities each adapted to fit against the core and both adapted to carry matrices at the same time, of means for completing the mold by the use of either of said cavities.

18. In a machine for casting curved stereotype printing plates, the combination of a core and a pair of concave mold backs each supporting a matrix, with means for bringing either mold back and its matrix into operative relations with the core at the will of the operator.

19. In a machine for casting curved stereotype printing plates, the combination of a semi-cylindrical mold, co-operating means for supporting two matrices, and means for positioning either matrix in the mold at the will of the operator.

20. In a machine for casting curved stereotype printing plates, the combination of a semi-cylindrical mold, means for supporting two matrices, and means for positioning either matrix in the mold at the will of the operator without stopping the machine.

21. The combination with a stereotype plate casting machine adapted to cast a plurality of curved printing plates successively from the same matrix, having means for supporting said matrix, of means for holding a second matrix in reserve, and means for substituting the reserved matrix for the matrix in use at the will of the operator.

22. The combination with a stereotype plate casting machine arranged to perform repeated operations fo-r making a plurality of curved printing plates successively from the same matrix, of means for'holding a second matrix in reserve, and means for substituting the reserved matrix for the matrix in use at the will of the operator, without interrupting the operation of the machine.

23. In a curved stereotype plate casting machine, the combination of a core, a back arranged to bear two matrices, one of which is in use at a time, so arranged that a plurality of plates may be cast from the matrix in use without bringing into action the matrix in reserve, and means operable at the will of the operator for substituting the matrix in reserve for the matrix in use when a suflicient number of casts have been made from the latter.

24. In a stereotype plate castingv machine for making curved printing plates, the combination of a core, a matrix carryingback arranged to bear two matrices, one of which is in useat a time so arranged that a plurality of plates may be cast from the matrix in use without bringing into action the matrix in reserve, and means operable at the will of the operator for substituting the matrix in reserve for the matrix in use when a suflicient number of casts have been made from tl1e latter without arresting the operation of the machine.

25. In a stereotype plate casting mold adapted to cast curved printing plates in a vertical position, the combination of a core, and a rotatable curved back having means for carrying a plurality of matrices each for co-operating with said core.

26. In a stereotype plate casting machine for making curved printing plates, the combination of a core and a rotatable back carrying a plurality of matrices so arranged that a number of plates may be cast from the matrices when successively introduced in casting position opposite the core.

27. In a machine for casting curved stereotype printing plates, the combination of a mold, and means for supporting two matrices, with means for bringing either matrix into operative position in the mold at the willof the operator, and means for flexing the matrix in use from the surface of the resulting cast.

28. The combination with a stereotype plate casting machine for making curved printing plates having a concave mold back and adapted tocast a plurality of plates successively from a matrix attached thereto, of a duplicate concave mold back carrying a matrix which is held in reserve, and means for substituting the concave mold back and matrix held in reserve for the concave mold back and matrix in use at the will of the operator.

29. In a machine for casting curved stereotype printing plates the combination with a mold consisting of a core and a'revolvable back turning on a vertical axis, of means connected with the back for holding a matrix in use and another in reserve, means for controlling the machine to cast a plurality of plates successively from the matrix in use and means by Which at will one matrix may be substituted for the other.

In testimony whereof I have hereunto aflixed my signature. i

HENRY A. WISE WOOD.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,583,214, granted May 4, 1926, upon the application of Henr A. Vise \Vood, of New York, N. Y., for an improvement in Curved-Stereotypelate-Casting Molds,an error appears in the printed specification requiring correction as follows: Page 4:, line 93, claim 1, for the Word score read cone, and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 8th day of June, A. D. 1926.

[SEAL] M. J. MOORE,

Acting Commissioner of Patents. 

